U.S. patent number 6,613,732 [Application Number 10/107,901] was granted by the patent office on 2003-09-02 for multilayer cleaning wipe.
This patent grant is currently assigned to Colgate-Palmolive Company. Invention is credited to Dawne Barry, John Fletcher, Albert R. Kelly, Gerard Scheubel, Lamberta Suazon, Barbara Thomas, Karen Wisniewski.
United States Patent |
6,613,732 |
Suazon , et al. |
September 2, 2003 |
Multilayer cleaning wipe
Abstract
A cleaning wipe comprising a multi layer needlepunched fabric
wherein the fabric is impregnated with a cleaning composition.
Inventors: |
Suazon; Lamberta (Ajax,
CA), Barry; Dawne (Stouffville, CA),
Fletcher; John (Oakville, CA), Wisniewski; Karen
(Bound Brook, NJ), Thomas; Barbara (Princeton, NJ),
Kelly; Albert R. (Douglaston, NY), Scheubel; Gerard
(Quebec, CA) |
Assignee: |
Colgate-Palmolive Company (New
York, NY)
|
Family
ID: |
28673585 |
Appl.
No.: |
10/107,901 |
Filed: |
March 27, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
|
|
008715 |
Nov 13, 2001 |
6440925 |
|
|
|
Current U.S.
Class: |
510/438; 134/42;
15/209.1; 510/295; 510/470; 510/499; 510/501; 510/503; 510/505;
510/506 |
Current CPC
Class: |
A61K
8/0208 (20130101); A61Q 19/10 (20130101); B32B
5/26 (20130101); B32B 23/02 (20130101); B32B
23/10 (20130101); C11D 1/83 (20130101); C11D
1/86 (20130101); C11D 3/2003 (20130101); C11D
3/2006 (20130101); C11D 3/201 (20130101); C11D
3/3418 (20130101); C11D 3/349 (20130101); C11D
17/041 (20130101); C11D 17/049 (20130101); C11D
1/12 (20130101); C11D 1/143 (20130101); C11D
1/146 (20130101); C11D 1/22 (20130101); C11D
1/29 (20130101); C11D 1/521 (20130101); C11D
1/523 (20130101); C11D 1/662 (20130101); C11D
1/75 (20130101); C11D 3/2044 (20130101) |
Current International
Class: |
A61Q
19/10 (20060101); B32B 23/10 (20060101); B32B
23/00 (20060101); B32B 23/02 (20060101); B32B
5/22 (20060101); B32B 5/26 (20060101); C11D
1/86 (20060101); C11D 17/04 (20060101); C11D
1/83 (20060101); C11D 3/34 (20060101); C11D
3/20 (20060101); C11D 1/38 (20060101); C11D
1/52 (20060101); C11D 1/66 (20060101); C11D
1/22 (20060101); C11D 1/75 (20060101); C11D
1/29 (20060101); C11D 1/14 (20060101); C11D
1/02 (20060101); C11D 1/12 (20060101); C11D
017/00 () |
Field of
Search: |
;510/438,295,499,501,503,505,506,470 ;134/42 ;428/288
;15/209.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Ogden; Necholus
Attorney, Agent or Firm: Nanfeldt; Richard E.
Parent Case Text
RELATED APPLICATION
This application is a continuation in part application of U.S. Ser.
No. 10/008,715 filed Nov. 13, 2001. Now U.S. Pat. No. 6,440,925.
Claims
What is claimed:
1. A hard surface cleaning wipe which comprises approximately: (a)
20 wt. % to 95 wt. % of a water insoluble substrate comprising a
top flame treated polypropylene needlepunched layer having an
abrasive surface, a center absorbent cellulose core layer and a
bottom fine fiber polyester layer, wherein the top layer, center
layer and bottom layer are needlepunched together; and (b) 5 wt. %
to 80 wt. % of a liquid cleaning composition being impregnated in
said water insoluble substrate, wherein said liquid cleaning
composition comprises: (i) 20 wt. % to 30 wt. % of an anionic
sulfonate surfactant; (ii) 2 wt. % to 12 wt. % of an anionic
sulfate surfactant; (iii) 0.5% to 10% of an alkyl polyglucoside
surfactant; (iv) 0.5 wt. % to 6 wt. % of a C.sub.12 -C.sub.14 alkyl
monoalkanol amide such as lauryl monalkanol amide; (v) 1 wt. % to 8
wt. % of a C.sub.1 -C.sub.4 alkanol; (vi) about 2% by weight of a
preservative selected from the group consisting of
5-bromo-5-nitro-dioxan-1,3 and
5-chloro-2-methyl-4-isothaliazolin-3-one; and (vii) the balance
being water.
2. The wipe according to claim 1, further including an alkali metal
salt of cumene sulfonate or xylene sulfonate.
3. The wipe according to claim 1, wherein said sulfonate surfactant
is a linear C.sub.10 -C.sub.16 alkyl benzene sulfonate.
4. The wipe according to claim 1, wherein said sulfate surfactant
is an ethoxylated C.sub.8 -C.sub.18 alkyl ether sulfate.
5. The wipe according to claim 1, further including about 0.01 to
about 1.5 wt. % of a perfume.
6. The wipe according to claim 1, further including a proton
donating agent.
7. The wipe according to claim 1, further including a polyethylene
glycol.
8. The wipe according to claim 6, further including a polyethylene
glycol.
9. The wipe according to claim 1, wherein said water insoluble
substrate comprises one or more materials selected from nonwoven
substrates, woven substrates, hydroentangeld substrates and
sponges.
10. A method of manufacturing a product according to claim 1,
wherein the cleaning composition is added or impregnated into the
water insoluble substrate by spraying, dipping, extrusion coating
or slot coating.
11. The wipe according to claim 1, wherein said liquid cleaning
composition includes sodium xylene sulfonate and/or sodium cumene
sulfonate.
12. A cleaning wipe which comprises approximately: (a) 20 wt. % to
95 wt. % of a water insoluble substrate comprising a top flame
treated polypropylene needlepunched layer having an abrasive
surface, a center absorbent cellulose core layer and a bottom fine
fiber polyester layer, wherein the top layer, center layer and
bottom layer are needlepunched together; (b) 5 wt. % to 80 wt. % of
a liquid cleaning composition being impregnated in said water
insoluble substrate, wherein said liquid cleaning composition
comprises: (i) 2 wt. % to 12 wt. % of an alkaline earth metal salt
of a sulfonate surfactant; (ii) 2 wt. % to 12 wt. % of an alkali
metal salt of a sulfonate surfactant; (iii) 5 wt. % to 18 wt. % of
an alkali metal salt of an ethoxylated alkyl ether sulfate
surfactant; (iv) 5 wt. % to 18 wt. % of an alkyl polyglucoside
surfactant; (v) 1 wt. % to 10 wt. % of an amine oxide surfactant;
(vi) I wt. % to 8 wt. % of a C.sub.1 -C.sub.4 alkanol; (vii) 0.5
wt. % to 6 wt. % of sodium xylene sulfonate and/or sodium cumene
sulfonate; about 2% by weight of a preservative selected from the
group consisting of 5-bromo-5-nitro-dioxan-1,3 and
5-chloro-2-methyl-4-isothaliazolin-3-one; and (viii) the balance
being water.
Description
FIELD OF INVENTION
The present invention relates to a cleaning wipe which is multi
layer fabric substrate has been impregnated with a liquid cleaning
composition.
BACKGROUND OF THE INVENTION
The patent literature describes numerous wipes for both body
cleaning and cleaning of hard surfaces but none describe wipes for
cleaning dishware, flatware, pots and pans. U.S. Pat. Nos.
5,980,931, 6,063,397 and 6,074,655 teach a substantially dry
disposable personal cleansing product useful for both cleansing and
conditioning the skin and hair. U.S. Pat. No. 6,060,149 teaches a
disposable wiping article having a substrate comprising multiple
layers.
U.S. Pat. Nos. 5,756,612; 5,763,332; 5,908,707; 5,914,177;
5,980,922 and 6,168,852 teach cleaning compositions which are
inverse emulsions.
U.S. Pat. Nos. 6,183,315 and 6,183,763 teach cleaning compositions
containing a proton donating agent and having an acidic pH. U.S.
Pat. Nos. 5,863,663; 5,952,043; 6,063,746 and 6,121,165 teaches
cleaning compositions which are oil in water emulsions.
SUMMARY OF THE INVENTION
A single use cleaning wipe for dishwashing application comprises a
water insoluble substrate comprising a top flame treated
polypropylene needlepunched layer having an abrasive surface, a
center absorbent cellulose core layer and a bottom fine fiber
polyester layer, wherein the top layer, center layer and bottom
layer are needlepunched together, impregnated with a cleaning
composition containing an anionic sulfonated surfactant, an alkyl
polyglucoside surfactant, an alkyl monoalkanol amide, an
ethoxylated alkyl ether sulfate surfactant, a C.sub.1 -C.sub.4
alkanol and water.
The liquid cleaning compositions of this invention are not an
emulsion and do not contain proteins, enzymes, sodium hypochlorite,
dimethicone, N-methyl-2-pyrrolidone, monoalkyl phosphate or
silicone based sulfosuccinate.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a cleaning wipe for dishware,
flatware, pots and pans which comprises approximately: (a) 20 wt. %
to 95 wt. % of a water insoluble substrate comprising a top flame
treated polypropylene needlepunched layer having an abrasive
surface, a center absorbent cellulose core layer and a bottom fine
fiber polyester layer, wherein the top layer, center layer and
bottom layer are needlepunched together; and (b) 5 wt. % to 80 wt.
% of a liquid cleaning composition being impregnated in said water
insoluble substrate, wherein said liquid cleaning composition
comprises: (i) 20 wt. % to 30 wt. % of an alkaline earth or alkali
metal salt of an anionic sulfonated surfactant; (ii) 2 wt. % to 12
wt. % of an alkali metal salt of an ethoxylated alkyl ether sulfate
surfactant; (iii) 0.5 wt. % to 10 wt. % of an alkyl polyglucoside
surfactant; (iv) 0.5 wt. % to 6 wt. % of a C.sub.12 -C.sub.14 alkyl
monoalkanol amide such as lauryl monalkanol amide; (v) 1 wt. % to 8
wt. % of a C.sub.1 -C.sub.4 alkanol; (vi) 0 to 5 wt. %, more
preferably 0.1 wt. % to 4 wt. % of a proton donating agent; (vii) 0
to 6 wt. %, more preferably 0.1 wt. % to 4 wt. % of a polyethylene
glycol; (viii) 0 to 6 wt. %, more preferably 0.5 wt. % to 5 wt. %
of sodium xylene sulfonate and/or sodium cumene sulfonate; and (ix)
the balance being water.
The present invention also relates to a cleaning wipe which
comprises approximately: (a) 20 wt. % to 95 wt. % of a water
insoluble substrate comprising a top flame treated polypropylene
needlepunched layer having an abrasive surface, a center absorbent
cellulose core layer and a bottom fine fiber polyester layer,
wherein the top layer, center layer and bottom layer are
needlepunched together; (b) 5 wt. % to 80 wt. % of a liquid
cleaning composition being impregnated in said water insoluble
substrate, wherein said liquid cleaning composition comprises: (i)
2 wt. % to 12 wt. % of an alkaline earth metal salt of a sulfonate
surfactant; (ii) 2 wt. % to 12 wt. % of an alkali metal salt of a
sulfonate surfactant; (iii) 5 wt. % to 18 wt. % of an alkali metal
salt of an ethoxylated alkyl ether sulfate surfactant; (iv) 5 wt. %
to 18 wt. % of an alkyl polyglucoside surfactant; (v) 1 wt. % to 10
wt. % of an amine oxide surfactant; (vi) 1 wt. % to 8 wt. % of a
C.sub.1 -C.sub.4 alkanol; (vii) 0.5 wt. % to 6 wt. % of sodium
xylene sulfonate and/or sodium cumene sulfonate; and (viii) the
balance being water.
Suitable water-soluble non-soap, anionic surfactants used in the
instant compositions include those surface-active or detergent
compounds which contain an organic hydrophobic group containing
generally 8 to 26 carbon atoms and preferably 10 to 18 carbon atoms
in their molecular structure and at least one water-solubilizing
group selected from the group of sulfonate, sulfate and carboxylate
so as to form a water-soluble detergent. Usually, the hydrophobic
group will include or comprise a C.sub.8 -C.sub.22 alkyl, alkyl or
acyl group. Such surfactants are employed in the form of
water-soluble salts and the salt-forming cation usually is selected
from the group consisting of sodium, potassium, ammonium, magnesium
and mono-, di- or tri-C.sub.2 -C.sub.3 alkanolammonium, with the
sodium, magnesium and ammonium cations again being preferred.
Examples of suitable sulfonated anionic surfactants are the well
known higher alkyl mononuclear aromatic sulfonates such as the
higher alkyl benzene sulfonates containing from 10 to 16 carbon
atoms in the higher alkyl group in a straight or branched chain,
C.sub.8 -C.sub.15 alkyl toluene sulfonates and C.sub.8 -C.sub.15
alkyl phenol sulfonates.
A preferred sulfonate is linear alkyl benzene sulfonate having a
high content of 3- (or higher) phenyl isomers and a correspondingly
low content (well below 50%) of 2- (or lower) phenyl isomers, that
is, wherein the benzene ring is preferably attached in large part
at the 3 or higher (for example, 4, 5, 6 or 7) position of the
alkyl group and the content of the isomers in which the benzene
ring is attached in the 2 or 1 position is correspondingly low.
Other suitable anionic surfactants are the olefin sulfonates,
including long-chain alkene sulfonates, long-chain hydroxyalkane
sulfonates or mixtures of alkene sulfonates and hydroxyalkane
sulfonates. These olefin sulfonate detergents may be prepared in a
known manner by the reaction of sulfur trioxide (SO.sub.3) with
long-chain olefins containing 8 to 25, preferably 12 to 21 carbon
atoms and having the formula RCH=CHR.sub.1 where R is a higher
alkyl group of 6 to 23 carbons and R.sub.1 is an alkyl group of 1
to 17 carbons or hydrogen to form a mixture of sultones and alkene
sulfonic acids which is then treated to convert the sultones to
sulfonates. Preferred olefin sulfonates contain from 14 to 16
carbon atoms in the R alkyl group and are obtained by sulfonating
an .alpha.-olefin.
Other examples of suitable anionic sulfonate surfactants are the
paraffin sulfonates containing 10 to 20, preferably 13 to 17,
carbon atoms. Primary paraffin sulfonates are made by reacting
long-chain alpha olefins and bisulfites and paraffin sulfonates
having the sulfonate group distributed along the paraffin chain are
shown in U.S. Pat. Nos. 2,503,280; 2,507,088; 3,260,744; 3,372,188;
and German Patent 735,096.
Examples of satisfactory anionic sulfate surfactants are the
C.sub.8 -C.sub.18 alkyl sulfate salts the ethoxylated C.sub.8
-C.sub.18 alkyl ether sulfate salts having the formula R(OC.sub.2
H.sub.4)n OSO.sub.3 M wherein n is 1 to 12, preferably 1and M is a
metal cation selected from the group consisting of sodium,
potassium, ammonium, magnesium and mono-, di- and triethanol
ammonium ions. The alkyl sulfates may be obtained by sulfating the
alcohols obtained by reducing glycerides of coconut oil or tallow
or mixtures thereof and neutralizing the resultant product.
On the other hand, the ethoxylated alkyl ether sulfates are
obtained by sulfating the condensation product of ethylene oxide
with a C.sub.8 -C.sub.18 alkanol and neutralizing the resultant
product. The alkyl sulfates may be obtained by sulfating the
alcohols obtained by reducing glycerides of coconut oil or tallow
or mixtures thereof and neutralizing the resultant product. The
ethoxylated alkyl ether sulfates differ from one another in the
number of moles of ethylene oxide reacted with one mole of alkanol.
Preferred alkyl sulfates and preferred ethoxylated alkyl ether
sulfates contain 10 to 16 carbon atoms in the alkyl group.
The ethoxylated C.sub.8 -C.sub.12 alkylphenyl ether sulfates
containing from 2 to 6 moles of ethylene oxide in the molecule also
are suitable for use in the inventive compositions. These
surfactants can be prepared by reacting an alkyl phenol with 2 to 6
moles of ethylene oxide and sulfating and neutralizing the
resultant ethoxylated alkylphenol.
Other suitable anionic surfactants are the C.sub.9 -C.sub.15 alkyl
ether polyethenoxyl carboxylates having the structural formula
R(OC.sub.2 H.sub.4)nOX COOH wherein n is a number from 4 to 12,
preferably 5 to 10 and X is selected from the group consisting of
##STR1##
wherein R.sub.1 is a C.sub.1 -C.sub.3 alkylene group. Preferred
compounds include C.sub.9 -C.sub.11 alkyl ether polyethenoxy (7-9)
C(O) CH.sub.2 CH.sub.2 COOH, C.sub.13 -C.sub.15 alkyl ether
polyethenoxy (7-9) ##STR2##
and C.sub.10 -C.sub.12 alkyl ether polyethenoxy (5-7) CH2COOH.
These compounds may be prepared by condensing ethylene oxide with
appropriate alkanol and reacting this reaction product with
chloracetic acid to make the ether carboxylic acids as shown in
U.S. Pat. No. 3,741,911 or with succinic anhydride or phthalic
anhydride. Obviously, these anionic surfactants will be present
either in acid form or salt form depending upon the pH of the final
composition, with salt forming cation being the same as for the
other anionic surfactants.
The amine oxide semi-polar nonionic surfactants comprise compounds
and mixtures of compounds having the formula ##STR3##
wherein R.sub.1 is an alkyl, 2-hydroxyalkyl, 3-hydroxyalkyl, or
3-alkoxy-2-hydroxypropyl radical in which the alkyl and alkoxy,
respectively, contain from 8 to 18 carbon atoms, R.sub.2 and
R.sub.3 are each methyl, ethyl, propyl, isopropyl, 2-hydroxyethyl,
2-hydroxypropyl, or 3-hydroxypropyl, and n is from 0 to 10.
Particularly preferred are amine oxides of the formula:
##STR4##
wherein R.sub.1 is a C.sub.12-16 alkyl and R.sub.2 and R.sub.3 are
methyl or ethyl. The above ethylene oxide condensates, amides, and
amine oxides are more fully described in U.S. Pat. No. 4,316,824
which is hereby incorporated herein by reference.
The alkyl polysaccharides surfactants, which are used in
conjunction with the anionic surfactants have a hydrophobic group
containing from about 8 to about 20 carbon atoms, preferably from
about 10 to about 16 carbon atoms, most preferably from about 12 to
about 14 carbon atoms, and polysaccharide hydrophilic group
containing from about 1.5 to about 10, preferably from about 1.5 to
about 4, most preferably from about 1.6 to about 2.7 saccharide
units (e.g., galactoside, glucoside, fructoside, glucosyl,
fructosyl; and/or galactosyl units). Mixtures of saccharide
moieties may be used in the alkyl polysaccharide surfactants. The
number x indicates the number of saccharide units in a particular
alkyl polysaccharide surfactant. For a particular alkyl
polysaccharide molecule x can only assume integral values. In any
physical sample of alkyl polysaccharide surfactants there will be
in general molecules having different x values. The physical sample
can be characterized by the average value of x and this average
value can assume non-integral values. In this specification the
values of x are to be understood to be average values. The
hydrophobic group (R) can be attached at the 2-, 3-, or 4-
positions rather than at the 1-position, (thus giving e.g. a
glucosyl or galactosyl as opposed to a glucoside or galactoside).
However, attachment through the 1- position, i.e., glucosides,
galactoside, fructosides, etc., is preferred. In the preferred
product the additional saccharide units are predominately attached
to the previous saccharide unit's 2-position. Attachment through
the 3-, 4-, and 6- positions can also occur. Optionally and less
desirably there can be a polyalkoxide chain joining the hydrophobic
moiety (R) and the polysaccharide chain. The preferred alkoxide
moiety is ethoxide.
Typical hydrophobic groups include alkyl groups, either saturated
or unsaturated, branched or unbranched containing from about 8 to
about 20, preferably from about 10 to about 18 carbon atoms.
Preferably, the alkyl group is a straight chain saturated alkyl
group. The alkyl group can contain up to 3 hydroxy groups and/or
the polyalkoxide chain can contain up to about 30, preferably less
than about 10, alkoxide moieties.
Suitable alkyl polysaccharides are decyl, dodecyl, tetradecyl,
pentadecyl, hexadecyl, and octadecyl, di-, tri-, tetra-, penta-,
and hexaglucosides, galactosides, lactosides, fructosides,
fructosyls, lactosyls, glucosyls and/or galactosyls and mixtures
thereof.
The alkyl monosaccharides are relatively less soluble in water than
the higher alkyl polysaccharides. When used in admixture with alkyl
polysaccharides, the alkyl monosaccharides are solubilized to some
extent. The use of alkyl monosaccharides in admixture with alkyl
polysaccharides is a preferred mode of carrying out the invention.
Suitable mixtures include coconut alkyl, di-, tri-, tetra-, and
pentaglucosides and tallow alkyl tetra-, penta-, and
hexaglucosides.
The preferred alkyl polysaccharides are alkyl polyglucosides having
the formula
wherein Z is derived from glucose, R is a hydrophobic group
selected from the group consisting of alkyl, alkylphenyl,
hydroxyalkylphenyl, and mixtures thereof in which said alkyl groups
contain from about 10 to about 18, preferably from about 12 to
about 14 carbon atoms; n is 2 or 3 preferably 2, r is from 0 to 10,
preferable 0; and x is from 1.5 to 8, preferably from 1.5 to 4,
most preferably from 1.6 to 2.7. To prepare these compounds a long
chain alcohol (R.sub.2 OH) can be reacted with glucose, in the
presence of an acid catalyst to form the desired glucoside.
Alternatively the alkyl polyglucosides can be prepared by a two
step procedure in which a short chain alcohol (R.sub.1 OH) can be
reacted with glucose, in the presence of an acid catalyst to form
the desired glucoside. Alternatively the alkyl polyglucosides can
be prepared by a two step procedure in which a short chain alcohol
(C.sub.1-6) is reacted with glucose or a polyglucoside (x=2 to 4)
to yield a short chain alkyl glucoside (x=1 to 4) which can in turn
be reacted with a longer chain alcohol (R.sub.2 OH) to displace the
short chain alcohol and obtain the desired alkyl polyglucoside. If
this two step procedure is used, the short chain alkylglucosde
content of the final alkyl polyglucoside material should be less
than 50%, preferably less than 10%, more preferably less than about
5%, most preferably 0% of the alkyl polyglucoside.
The amount of unreacted alcohol (the free fatty alcohol content) in
the desired alkyl polysaccharide surfactant is preferably less than
about 2%, more preferably less than about 0.5% by weight of the
total of the alkyl polysaccharide. For some uses it is desirable to
have the alkyl monosaccharide content less than about 10%.
The used herein, "alkyl polysaccharide surfactant" is intended to
represent both the preferred glucose and galactose derived
surfactants and the less preferred alkyl polysaccharide
surfactants. Throughout this specification, "alkyl polyglucoside"
is used to include alkyl polyglycosides because the stereochemistry
of the saccharide moiety is changed during the preparation
reaction.
An especially preferred APG glycoside surfactant is APG 625
glycoside manufactured by the Henkel Corporation of Ambler, PA.
APG25 is a nonionic alkyl polyglycoside characterized by the
formula:
wherein n=10 (2%); n=122 (65%); n=14 (21-28%); n=16 (4-8%) and n=18
(0.5%) and x (degree of polymerization) =1.6. APG 625 has: a pH of
6 to 10 (10% of APG 625 in distilled water); a specific gravity at
25.degree. C. of 1.1 g/ml; a density at 25.degree. C. of 9.1
lbs/gallon; a calculated HLB of 12.1 and a Brookfield viscosity at
35C, 21 spindle, 5-10 RPM of 3,000 to 7,000 cps.
The anionic and alkyl polyglucoside surfactants discussed above are
solubilized in an aqueous medium comprising water and optionally,
solubilizing ingredients such as C1-C.sub.4 alkanols and dihydroxy
alkanols such as ethanol isopropanol and propylene glycol. Suitable
water soluble hydrotropic salts include sodium, potassium, ammonium
and mono-, di- and triethanolammonium salts of xylene and cumene
sulfonates. While the aqueous medium is primarily water, preferably
said solubilizing agents are included in order to control the
viscosity of the liquid composition and to control low temperature
cloud clear properties. Usually, it is desirable to maintain
clarity to a temperature in the range of 5.degree. C. to 10
.degree. C. Therefore, the proportion of solubilizer generally will
be from about 1 % to 15%, preferably 2% to 12%, most preferably 3%
to 8%, by weight of the detergent composition with the proportion
of ethanol, when present, being 5% of weight or less in order to
provide a composition having a flash point above about 46.degree.
C. Preferably the solubilizing ingredient will be a mixture of
ethanol and either sodium xylene sulfonate or sodium cumene
sulfonate or a mixture of said sulfonates or ethanol and urea.
Inorganic salts such as sodium sulfate, magnesium sulfate, sodium
chloride and sodium citrate can be added at concentrations of 0.5
to 4.0 wt. % to modify the cloud point of the nonionic surfactant
and thereby control the haze of the resultant solution. Various
other ingredients such as urea at a concentration of about 0.5 to
4.0 wt. % or urea at the same concentration in combination with
ethanol at a concentration of about 0.5 to 4.0 wt. % can be used as
solubilizing agents. Other ingredients which have been added to the
compositions at concnetrations of about 0.1 to 4.0 wt. percent are
perfumes, sodium bisulfite, ETDA, isoethanoeic and proteins such as
lexine protein.
Polyethylene glycol maybe is used in the instant composition has a
molecular weight of 200 to 1,000 wherein the polyethylene glycol
has the structure
wherein n is 4 to 52. The concentration of the polyethylene glycol
in the instant composition is 0 to 7 wt. %, more preferably 0.1 wt.
% to 5 wt. %.
The proton donating agent is selected from the group consisting of
inorganic acids such as sulfuric acid and hydrochloric acid and
hydroxy containing organic acid, preferably a hydroxy aliphatic
acid, which are selected from the group consisting of lactic acid
or citric acid, orthohydroxy benzoic acid or citric acid or
glycolic and mixtures thereof.
The water is present in the composition at a concentration of about
5 wt. % to 70 wt. %.
The cleaning composition of this invention may, if desired, also
contain other components either to provide additional effect or to
make the product more attractive to the consumer. The following are
mentioned by way of example: Antibacterial agents such as
2,4,4'-trichloro-2'hydroxydiphenyl ether colors or dyes in amounts
up to 0.5% by weight; preservatives or antioxidizing agents, such
as formalin, 5-bromo-5-nitro-dioxan-1,3;
5-chloro-2-methyl-4-isothaliazolin-3-one,
2,6-di-tert.butyl-p-cresol, etc., in amounts up to 2% by weight;
and pH adjusting agents, such as sulfuric acid or sodium hydroxide,
as needed.
The product of the present invention comprises a water insoluable
substrate with one or more layers. Each layer may have different
textures and abrasiveness. Differing textures can result from the
use of different combinations of materials or from the use of
different manufacturing processes or a combination thereof. A dual
texture substrate can be made to provide the advantage of a more
abrasive side for cleaning difficult to remove soils. A softer side
can be used for fine dishware and flatware. The substrate should
not dissolve or break apart in water. It is the vehicle for
delivering the cleaning composition to dishware, flatware, pots and
pans. Use of the substrate enhances lathering, cleaning and grease
removal.
A wide variety of materials can be used as the substrate. It should
have sufficient wet strength, abrasivity, loft and porosity.
Examples include, non woven substrates, wovens substrates,
hydroentangled substrates and sponges.
Examples of suitable non woven water insoluable substrates include,
100% cellulose Wadding Grade 1804 from Little Rapids Corporation,
100% polypropylene needlepunch material NB 701-2.8 --W/R from
American Non-wovens Corporation, a blend of cellulosic and
synthetic fibres-Hydraspun 8579 from Ahistrom Fibre Composites, and
70% Viscose/30% PES Code 9881 from PGI Nonwovens Polymer Corp.
Another composite material manufactured by Texcel from a layer of
coarse fiber 100% polypropylene needlepunch, an absorbent cellulose
core and a fine fiber polyester layer needlepunched together. The
polypropylene layer can range from 1.5 to 3.5 ox/sq. yd. The
cellulose core is a creped paper layer ranging from 0.5 to 2 ox/sq.
yd. The fine fiber polyester layer can range from 0.5 to 2 oz/sq.
yd.
Still another composite material manufactured by Texcel from a
layer of coarse fiber 100% polypropylene needlepunch, an absorbent
cellulose core and a fine fiber polyester layer needlepunched
together. The polypropylene layer can range from 1.5 to 3.5 oz/sq.
yd. The cellulose core is a creped paper layer ranging from 0.5 to
2 oz/sq. yd. The fine fiber polyester layer can range from 0.5 to 2
oz/sq. yd. The polypropylene layer is flame treated to further
increase the level of abrasivity. The temperature of the flame and
the length of time the material is exposed can be varied to create
different levels of surface roughness.
The abrasiveness is tested by cutting one quarter inch thick Lucite
boards to fit an abrader bed. The boards are marked to indicate the
track of the wipes during abrasion (approximately 2 1/4and 4
1/2inches from one long edge) and three spots along the track (6, 9
and 12 inches from the short end). This gives unique and
reproducible locations at which to do gloss measurements which are
in the center of the abrasion track.
Using a BYK-Gardener Haze-Gloss glossmeter, the indicated spots are
measured for starting gloss. An average and standard deviation is
reported for each track using the three measurements.
Pieces of the wipes are cut approximately 3 inches by 2 inches.
This piece is wrapped around a piece of sponge that fits in a
holder for the abrader. (Indication should be made of whether the
material is being used in the machine or cross direction). This
wrapped sponge is placed in the holder, tucking all the edges of
the wipe into the holder so that it is kept firmly in place. The
dry sponge is wetted with approximately 20-25 g of water (either
deionized, distilled or tap as the experiment desires). This is
done so that there are two wipes in the trial.
The gloss measured Lucite board is placed in the abrader bed. Set
the abrader for 500 cycles and start.
After the abrader cycles have ended, the Lucite board is removed.
It is wiped dry with paper towel to remove any residual water. It
is also inspected for any fingerprints incurred during handling and
these are also wiped clean. Remeasure the gloss at the specified
spots again and again report the average of these three spots and
the standard deviation for each track.
The higher the abrasiveness of the wipe, the more that it roughens
the surface of the Lucite and the more the gloss is reduced. The
most abrasive of the wipes therefore give the greatest decrease in
gloss. Results for this test are given below.
Change in Gloss for 500 Material (all machine direction) cycles 3
layer needlepunch (Texel) no flame treatment 0 3 layer needlepunch
(Texel) medium flame 4 treatment 3 layer needlepunch (Texel) high
flame 19 treatment
Ahistrom Manufacturers:
A hydroentangled nonwoven created from a blend of cellulosic and
polyester and/or polypropylene fibers with an abrasive side. The
basis weight can range from 1.2 to 6 ounces per square yard.
Kimberly Clark Manufacturers:
A composite dual textured material manufactured by Kimberly Clark
comprises a coarse meltblown polypropylene, polyethylene, or
polyester and high loft spunbond polyester. The two materials can
be laminated together using chemical adhesives or by coprocessing
the two layers. The coarse meltblown layer can range from 1 to 3
ounces per square yard while the highloft spunbond layer can range
from 1 to 3 ounces per square yard.
Another example of a composite is a dual textured material composed
of coarse meltblown polypropylene, polyethylene, or polyester and
polyester/cellulose coform. The two materials can be laminated
together using chemical adhesives or by coprocessing the two
layers. The coarse meltblown layer can range from 1 to 3 ounces per
square yard. The coform layer can range in composition from 30%
cellulose and 70% polyester to 70% cellulose and 30% polyester and
the basis weight can range from 1.5 to 4.5 ounces per square
yard.
The product of the present invention comprising mutliple layers may
be ultrasonically bonded after applying the coating of one or more
of the layers. Alternatively layers may be bonded together by
needlepunch, thermal bonding, chemical bonding, or sonic bonding
prior to applying the coating.
The following examples illustrate liquid cleaning compositions of
the described invention. Unless otherwise specified, all
percentages are by weight. The exemplified compositions are
illustrative only and do not limit the scope of the invention.
Unless otherwise specified, the proportions in the examples and
elsewhere in the specification are by weight.
EXAMPLE 1
The following compositions (in wt. %) were prepared by simple batch
mixing at room temperature. The cleaning wipe was made by the
previously described impregnation process.
A B Part I Ammonium ethoxylated alkyl ether sulfate 15.34 Magnesium
linear alkyl benzene sulfonate 26.6 Lauryl polyglucoside 3.3
Lauramide myristamide monoethanol amide 3.5 Sodium xylene sulfonate
4.0 Ethanol 1.8 Sodium bisulfite 0.2 HEDTA 0.67 Preservative 0.47
Water Bal. Part 1 Formula A 1 3 NB-701-2.8/WR fabric 1 Wadding
Grade 1804 1 SRF #8265C 1 SRF 1262 1
While particular embodiments of the invention and the best mode
contemplated by the inventors for carrying out the invention have
been shown, it will be understood, of course, that the invention is
not limited thereto since modifications may be made by those
skilled in the art, particularly in light of the foregoing
teachings. It is, therefore, contemplated by the appended claims to
cover any such modifications as incorporate those features which
constitute the essential features of these improvements within the
true spirit and scope of the invention.
EXAMPLE 2
The following formula was prepared at room temperature by simple
liquid mixing procedures as previously described. The liquid
formulation was then applied to the nonwoven substrate at room
temperature.
A Part I Formulation Water Balance Magnesium LAS 9.00 NaLAS 3.00
NH4 AEOS 1.3 EO 11.5 APG 625 10.0 Lauryl myristyl amidopropyl amine
oxide 5.34 Perfume 0.45 Color solution 0.18 pH 6.75 Part II
Composite Formulation A 49.0 3 layer needlepunch.sup.1 flame
treated 51.0 .sup.1 Top layer flame treated 100% polypropylene
(47%), center cellulosic wadding layer (26.5%) and bottom fine
fabric polyester layer (26.5%) (Three layers needlepunched
together).
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